Definitions for fracture toughness
frac·ture tough·ness

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1. Fracture toughness

   In materials science, fracture toughness is the critical stress intensity factor of a sharp crack where propagation of the crack suddenly becomes rapid and unlimited. A component's thickness affects the constraint conditions at the tip of a crack with thin components having plane stress conditions and thick components having plane strain conditions. Plane strain conditions give the lowest fracture toughness value which is a material property. The critical value of stress intensity factor in mode I loading measured under plane strain conditions is known as the plane strain fracture toughness, denoted K Ic {\displaystyle K_{\text{Ic}}} . When a test fails to meet the thickness and other test requirements that are in place to ensure plane strain conditions, the fracture toughness value produced is given the designation K c {\displaystyle K_{\text{c}}} . Fracture toughness is a quantitative way of expressing a material's resistance to crack propagation and standard values for a given material are generally available. Slow self-sustaining crack propagation known as stress corrosion cracking, can occur in a corrosive environment above the threshold K Iscc {\displaystyle K_{\text{Iscc}}} and below K Ic {\displaystyle K_{\text{Ic}}} . Small increments of crack extension can also occur during fatigue crack growth, which after repeated loading cycles, can gradually grow a crack until final failure occurs by exceeding the fracture toughness.

WikidataRate this definition:3.0 / 2 votes

1. Fracture toughness

   In materials science, fracture toughness is a property which describes the ability of a material containing a crack to resist fracture, and is one of the most important properties of any material for many design applications. The linear-elastic fracture toughness of a material is determined from the stress intensity factor at which a thin crack in the material begins to grow. It is denoted KIc and has the units of or . Plastic-elastic fracture toughness is denoted by JIc, with the unit of J/cm² or lbf-in/in², and is a measurement of the energy required to grow a thin crack. The subscript Ic denotes mode I crack opening under a normal tensile stress perpendicular to the crack, since the material can be made deep enough to stand shear or tear. Fracture toughness is a quantitative way of expressing a material's resistance to brittle fracture when a crack is present. If a material has much fracture toughness it will probably undergo ductile fracture. Brittle fracture is very characteristic of materials with less fracture toughness. Fracture mechanics, which leads to the concept of fracture toughness, was broadly based on the work of A. A.

How to pronounce fracture toughness?

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How to say fracture toughness in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of fracture toughness in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of fracture toughness in Pythagorean Numerology is: 4

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Fracture_Toughness
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=fracture toughness